51 lines
1.6 KiB
Python
51 lines
1.6 KiB
Python
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"""Tests buffering of execution requests."""
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from .utils import wait_for_selector
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def wait_for_cell_text_output(notebook, index):
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cell = notebook.cells[index]
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output = wait_for_selector(cell, ".output_text", single=True)
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return output.text
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def wait_for_kernel_ready(notebook):
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wait_for_selector(notebook.browser, ".kernel_idle_icon")
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def test_kernels_buffer_without_conn(prefill_notebook):
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"""Test that execution request made while disconnected is buffered."""
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notebook = prefill_notebook(["print(1 + 2)"])
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wait_for_kernel_ready(notebook)
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notebook.browser.execute_script("IPython.notebook.kernel.stop_channels();")
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notebook.execute_cell(0)
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notebook.browser.execute_script("IPython.notebook.kernel.reconnect();")
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wait_for_kernel_ready(notebook)
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assert wait_for_cell_text_output(notebook, 0) == "3"
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def test_buffered_cells_execute_in_order(prefill_notebook):
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"""Test that buffered requests execute in order."""
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notebook = prefill_notebook(['', 'k=1', 'k+=1', 'k*=3', 'print(k)'])
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# Repeated execution of cell queued up in the kernel executes
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# each execution request in order.
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wait_for_kernel_ready(notebook)
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notebook.browser.execute_script("IPython.notebook.kernel.stop_channels();")
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# k == 1
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notebook.execute_cell(1)
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# k == 2
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notebook.execute_cell(2)
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# k == 6
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notebook.execute_cell(3)
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# k == 7
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notebook.execute_cell(2)
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notebook.execute_cell(4)
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notebook.browser.execute_script("IPython.notebook.kernel.reconnect();")
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wait_for_kernel_ready(notebook)
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# Check that current value of k is 7
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assert wait_for_cell_text_output(notebook, 4) == "7"
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